Abstract
The effect of algalization on paddy yield and its nutrition were analyzed. The application of Leptolyngbya boryana mat in conjunction with different doses of fertilizer (R + A + 75%N, R + A + 100%N, R + 100%N, and R + A + 125%N) was performed in the paddy fields of Andhra Pradesh, India. Leptolyngbya boryana mat acted as a promising metal sequester and demonstrated an elicited photosynthetic activity (2-fold increase in Chl-a), carbohydrate (2-fold increase) and lipid (1.7-fold increase) content (% w/w) after 2-month cultivation. It also displayed proficient metal (ppm) uptake efficiency in the order Ca > Fe > Mg > K > Na > Mn > Zn > Cr. In grains, higher nutrient accumulation for Fe (~2-fold), Mg (~1.5-fold) and Ca (~5-fold), and a significantly higher translocation factor (Tf) in the order Ca > K > Mg were recorded under R + A + 125%N. In essence, algalization substantially improved the overall nutritive quality of the rice grains, especially its iron content.
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